* {
    margin: 0;
    padding: 0;
}

body {
    width: 100%;
    color: #747474;
    line-height: 2.27;
}

#air {
    width: 100%;
    height: 130px;
}

html,
body {
    position: relative;
    height: 100%;
}



// 导航栏模块
.nav {
    width: 100%;
    height: 800px;
    background: url('../img/aboutbg.jpg') no-repeat;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;

    .nav_text {
        color: #ffffff;
        text-align: center;
        letter-spacing: 2px;
        display: flex;
        flex-direction: column;

        :nth-child(1) {
            font-size: 80px;
            line-height: 96px;
            font-weight: 700;
        }

        :nth-child(2) {
            margin-top: 20px;
            font-size: 34px;
            line-height: 40px;
            font-weight: 400;
            letter-spacing: 1px;
        }
    }
}

/* 第一部分 */
.section-01 {
    display: flex;
    flex-direction: column;
    justify-content: space-between;

    .title {
        margin: auto;
        padding: 55.281px 30px 40px 30px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;

        :nth-child(1) {
            margin-bottom: 16px;
            height: 41px;
            line-height: 41px;
            font-size: 32px;
            color: #333;
        }

        :nth-child(2) {
            margin-bottom: 20px;
            height: 34px;
            line-height: 34px;
            font-size: 15px;
        }

        :nth-child(3) {
            margin-bottom: 30px;
            width: 206px;
            border-bottom: 2px solid #ff6600;
        }
    }

    .container {
        margin: auto;
        width: 1170px;
        display: flex;
        justify-content: space-between;

        .text {
            width: 33.33%;
            margin-left: 46.797px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;

            p {
                width: 360px;
                margin-bottom: 20px;
                font-size: 15px;
            }

            img {
                width: 241px;
                height: 195px;
                margin: auto;
            }
        }

    }
}

// 第二部分
.section-02 {
    .title {
        margin: auto;
        padding: 55.281px 30px 10px 30px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;

        :nth-child(1) {
            margin-bottom: 16px;
            height: 41px;
            line-height: 41px;
            font-size: 32px;
            color: #333;
        }

        :nth-child(2) {
            margin-bottom: 20px;
            height: 34px;
            line-height: 34px;
            font-size: 15px;
        }

        :nth-child(3) {
            margin-bottom: 30px;
            width: 206px;
            border-bottom: 2px solid #ff6600;
        }
    }

    .container {
        margin: auto;
        width: 1170px;
        display: flex;
        justify-content: space-between;

        :nth-child(2) {
            margin-left: 50px;
            font-size: 15px;

            p {
                margin-bottom: 20px;
                width: 750px;
            }
        }
    }

}

// 第三部分
.section-03 {
    width: 100%;
    padding: 182px 0 80px 0;
    background-color: #f5f5f5;

    .title {
        margin: auto;
        padding: 55.281px 30px 10px 30px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;

        :nth-child(1) {
            margin-bottom: 16px;
            height: 41px;
            line-height: 41px;
            font-size: 32px;
            color: #333;
        }

        :nth-child(2) {
            margin-bottom: 20px;
            height: 34px;
            line-height: 34px;
            font-size: 15px;
        }

        :nth-child(3) {
            margin-bottom: 30px;
            width: 206px;
            border-bottom: 2px solid #ff6600;
        }

        :nth-child(4) {
            margin-bottom: 20px;
            font-size: 15px;
        }


    }

    .swiper-container {
        margin: auto;
        width: 800px;
        height: 333px;
        overflow: hidden;

        .swiper-button-next,
        .swiper-button-prev {
            color: #ffffff;
            background: #747477;

        }

        .swiper-wrapper {
            display: flex;


            .swiper-slide {
                text-align: center;
                font-size: 18px;
                background: #fff;

                /* Center slide text vertically */
                display: -webkit-box;
                display: -ms-flexbox;
                display: -webkit-flex;
                display: flex;
                -webkit-box-pack: center;
                -ms-flex-pack: center;
                -webkit-justify-content: center;
                justify-content: center;
                -webkit-box-align: center;
                -ms-flex-align: center;
                -webkit-align-items: center;
                align-items: center;
            }
        }
    }

}